1. Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
2. Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho Kawaguchi,
Saitama 332-0012, Japan
3. Advanced
Materials Research Laboratories, Toray Industries, Inc., 3-2-1 Sonoyama, Otsu, Shiga
520-0842, Japan